Physics

6 April, 19:23

1) A hot, bright star would appear in which section of an H-R diagram?

A) lower left

B) upper right

C) upper left

D) lower right

2) All stars remain on the main sequence

A) until they stabilize

B) for about 90% of their lifetimes

C) until they become protostars

D) for about 10 billion years

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